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Is this true or false Diffusion is the movement of molecules from an area of higher concentration to one of lower concentration caused by an input of energy to the system.?
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What drives Facilitated diffusion?
Facilitated diffusion is a passive process whereby a molecule is "carried" across a semi-permeable membrane by a channel or protein carrier. Like diffusion, this process requires no energy, however, since passive diffusion can drive movement against a concentration gradient it is not really diffusion.
What might happen if a disease caused a plasma membrane to thicken?
decreased movement of molecules entering the cells decreased movement of molecules entering the cells
Which sense responds to the energy caused by movement of air molecules?
smell
Is Brownian movement peculiar to living tissue?
Yes, Brownian movement is peculiar to living tissue. It is the random movement of microscopic particles caused by the direct impact with the molecules of surrounding also called molecular movement.
Which ions electrical charges oppose the direction of movement that is caused by their concentration gradient?
Any ion that is positive but has a higher concentration inside the cell or is negative and has a higher concentration outside the cell. Any ion that is positive but has a higher concentration inside the cell or is negative and has a higher concentration outside the cell.
Difference between molecular motion and diffusion?
It triggers diffusion because diffusion is the movement of molecules, therefore as soon as the molecules move diffusion begins to do it's job. It will take them from areas of greater concentration to areas of lesser concentration.
What drives diffusion?
Diffusion is the movement of ions and other micro molecules across a barrier or membrane. Diffusion is caused by gradients on either side of the membrane.
How does diffusion take place?
Molecules move from an area from where there is a high concentration to an area where there is a low concentration. This occurs until equilibrium is reach. After equilibrium is reached, diffusion still occurs. (but in "equal trade") Diffusion is caused by the random movements of molecules.
What drives Facilitated diffusion?
Facilitated diffusion is a passive process whereby a molecule is "carried" across a semi-permeable membrane by a channel or protein carrier. Like diffusion, this process requires no energy, however, since passive diffusion can drive movement against a concentration gradient it is not really diffusion.
Place a check mark next to the box that describes diffusion explain your answer?
Some nutrients move into a cell of diffusion
How are oxygen and carbon dioxide exchanged in the Lings and though all cell membranes?
They enter/exit through a passive transport process called diffusion. It is caused by a concentration gradient within the two things being exchanged. The molecules diffuse across the membrane from the high concentration to the lower concentration side.
What causes diffusion in the cell?
Diffusion is caused when molecules are moving around and bumping each other in the cell. Collisions cause the molecules to them push apart from one another. Eventually the molecules continue to do this and they spread throughout the area.
What might happen if a disease caused a plasma membrane to thicken?
decreased movement of molecules entering the cells decreased movement of molecules entering the cells
Which sense responds to the energy caused by movement of air molecules?
smell
What is the thinning of ozone layer?
The reduction in concentration of ozone molecules is the thinning. It is caused by CFC's.
How does temperature affect rate of diffusion?
Faster diffusion will take place if the surroundings are warmer. Increase in temperature means an increase in molecules' speed (kinetic energy). So the molecules move faster and there will be more spontaneous spreading of the material which means that diffusion occurs more quickly.
What substances move into and out of cells by diffusion?
diffusion- substances move across the cell membrane from areas of high concentration to areas of low concentration osmosis is the diffusion of water across a cell membrane (area of high concentration to an area of low concentration)
